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The verbose flag is responsible for dereferencing of addresses, and it
is perfectly handled by umove_or_printaddr; moreover, this early exit
leads to incorrect formatting of last argument.
* loop.c (loop_ioctl): Do not check verbose flag explicitly and do not
exit early if it is not set.
lo_encrypt_key is a sized string with its size specified by
lo_encrypt_key_size field, so take lo_encrypt_key_size into account.
* loop.c (decode_loop_info, decode_loop_info64): Use minimum of
LO_KEY_SIZE and lo_encrypt_key_size field value as lo_encrypt_key size.
It is converted to an unsigned value in kernel (see loop_info64_from_old
in drivers/block/loop.c), so let's print it that way despite its type.
* loop.c (decode_loop_info): Print lo_encrypt_key_size as an uint32_t
value.
They are of char type, so "hh" length modifier should be used (otherwise
they are printed incorrectly as they are sign extended implicitly when
passed as printf arguments in case char is a signed type which is true
for most compilers).
* loop.c (decode_loop_info): Change "%#x" printf qualifier to "%#hhx"
in printing routine for array elements of the "reserved" field of
loop_info structure.
Since these are architecture-independent and have been added over the
kernel's lifetime, it makes sense to have these definitions in strace
itself.
* xlat/loop_cmds.in: New file.
* loop.c: Include "xlat/loop_cmds.h".
(loop_ioctl): Eliminate conditional compilation based on availability
of LOOP_* constant definitions.
struct loop_info contains fields of type long, so it definitely should
have been mpersified.
* defs.h (loop_ioctl): Remove prototype.
* loop.c (struct_loop_info): New typedef.
Include DEF_MPERS_TYPE(struct_loop_info) and MPERS_DEFS.
(decode_loop_info): Replace struct loop_info with struct_loop_info.
Cast lo_inode, lo_init[0], and lo_init[1] to kernel_ulong_t and print
them using appropriate format specifiers.
(loop_ioctl): Wrap into MPERS_PRINTER_DECL.
Co-authored-by: Dmitry V. Levin <ldv@altlinux.org>
Remove temporary macros created for transition from long
to kernel_ulong_t.
Automatically replace PRI_kr[dux] with PRI_kl[dux] using
$ git grep -l 'PRI_kr[dux]' | xargs sed -ri 's/PRI_kr([dux])/PRI_kl\1/g'
* defs.h (PRI_krd, PRI_kru, PRI_krx): Remove. All users updated.
Remove temporary types created for transition from long
to kernel_ulong_t.
Automatically replace kernel_scno_t and kernel_ureg_t with
kernel_ulong_t using
$ git grep -El 'kernel_(scno|ureg)_t' |
xargs sed -ri 's/kernel_(scno|ureg)_t/kernel_ulong_t/g'
* kernel_types.h (kernel_scno_t, kernel_ureg_t): Remove.
All users updated.
Prepare for the change of kernel_ureg_t and kernel_scno_t from
unsigned long to kernel_ulong_t.
* defs.h (PRI_krd, PRI_kru, PRI_krx): New temporary macros.
All users updated.
* defs.h (DECL_IOCTL): Change arg type from long to kernel_ureg_t.
* dm.c (dm_known_ioctl, dm_ioctl): Likewise.
* file_ioctl.c (file_ioctl): Likewise.
* fs_x_ioctl.c (fs_x_ioctl): Likewise.
* ioctl.c (ioctl_decode): Likewise.
* loop.c (decode_loop_info, decode_loop_info64): Change addr type
from long to kernel_ureg_t.
(loop_ioctl): Change arg type from long to kernel_ureg_t.
* ptp.c (ptp_ioctl): Likewise.
* scsi.c (print_sg_io_v3_req, print_sg_io_v3_res, print_sg_io_v4_req,
print_sg_io_v4_res, scsi_ioctl): Likewise.
* sock.c (print_ifreq, sock_ioctl): Likewise.
(decode_ifconf): Change addr type from long to kernel_ureg_t.
* term.c (decode_termios, decode_termio, decode_winsize, decode_ttysize,
decode_modem_flags): Likewise.
(term_ioctl): Change arg type from long to kernel_ureg_t.
* ubi.c (ubi_ioctl): Likewise.
* userfaultfd.c (uffdio_ioctl): Likewise.
* loop.c (decode_loop_info): Use square brackets to print
struct loop_info.lo_init and struct loop_info.reserved arrays.
(decode_loop_info64): Use square brackets to print
struct loop_info64.lo_init array.
Decode as much data on entering syscall as possible.
* loop.c: Include <linux/ioctl.h> instead of <sys/ioctl.h>.
Update for RVAL_DECODED.
(decode_loop_info, decode_loop_info64): New functions.
(loop_ioctl): Use them. Decode LOOP_SET_STATUS, LOOP_SET_STATUS64,
LOOP_SET_FD, LOOP_CHANGE_FD, LOOP_CTL_ADD and LOOP_CTL_REMOVE on
entering syscall.
Print LOOP_SET_FD and LOOP_CHANGE_FD arguments using printfd.
string_quote() has proven to be too hard to use, replace it with
print_quoted_string() that does memory allocation and prints the result.
* defs.h (string_quote): Remove.
(QUOTE_0_TERMINATED, QUOTE_OMIT_LEADING_TRAILING_QUOTES): New macros.
(print_quoted_string): New prototype.
* util.c (string_quote): Make static; take "style" flags instead
of "len", treat QUOTE_0_TERMINATED style flag as former (len == -1);
add QUOTE_OMIT_LEADING_TRAILING_QUOTES style flag support.
(ALLOCA_CUTOFF, use_alloca): New macros.
(print_quoted_string): New function.
(printpathn, printstr): Update to new API.
* loop.c (loop_ioctl): Likewise.
* mtd.c (ubi_ioctl): Likewise.
* net.c (print_scm_security): Likewise.
* socketutils.c (unix_parse_response): Likewise.
Automatically update all xlat structures using the following sed regexp:
s/^[[:space:]]*{[[:space:]]*0[[:space:]]*,[[:space:]]*NULL[[:space:]]*,\?[[:space:]]*}[[:space:]]*,\?[[:space:]]*/\tXLAT_END/
Automatically convert all xlat structures to XLAT form
using the following sed regexp:
s/^[[:space:]]*{[[:space:]]*\([^",}[:space:]]\+\)[[:space:]]*,[[:space:]]*"\1",\?[[:space:]]*}[[:space:]]*/\tXLAT(\1)/
* configure.ac: Check for LO_FLAGS_AUTOCLEAR and LO_FLAGS_PARTSCAN
declarations.
* loop.c (loop_flags_options): Use LO_FLAGS_AUTOCLEAR and
LO_FLAGS_PARTSCAN only when appropriate declarations are available.
(loop_ioctl): Use LOOP_SET_CAPACITY only when it is defined.
Needed to debug some losetup failures, and it's easier when you can see
what the kernel is getting vs what you think you're sending, so add some
decoders for those ioctls.
* loop.c: New file.
* Makefile.am (strace_SOURCES): Add loop.c.
* defs.h (loop_ioctl): New prototype.
(string_quote): Likewise.
* ioctl.c (ioctl_decode): Call loop_ioctl when code is 'L'.
* util.c (string_quote): Remove static keyword.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
